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Microchip Technology MXLDA3KP15A
- Part No.:
- MXLDA3KP15A
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP15A.pdf
- Description:
- UNI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:7,386
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Product details
Overview
MXLDA3KP15A from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 15 V standoff voltage (VWM), 16.7–18.5 V breakdown voltage (V(BR)), and 24.4 V maximum clamping voltage (VC) at 123 A peak pulse current. It provides secondary lightning protection per IEC61000-4-5 (42 Ω, Class 1–4), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient protection in power supply input stages.
For engineers reviewing the MXLDA3KP15A datasheet, MXLDA3KP15A pinout, MXLDA3KP15A application, or MXLDA3KP15A equivalent, key selection criteria include its 15 V working voltage rating, sub-100 ps response time, 123 A surge capability at 10/1000 µs, RoHS-compliant e3 matte-tin termination, and MIL-PRF-19500 upscreening eligibility for high-reliability aerospace and defense systems.
Technical Context
The MXLDA3KP15A operates as a unidirectional avalanche diode-based TVS, designed to clamp transients before downstream circuitry exceeds safe voltage thresholds. Its 15 V VWM ensures compatibility with 12 V nominal DC systems, while its 24.4 V VC at IPP = 123 A defines the worst-case overvoltage seen by protected ICs during surge events.
It meets IEC61000-4-5 Class 1–4 secondary lightning immunity with 42 Ω source impedance and supports temperature derating per Figure 3 - retaining ≥80% of 3000 W rating up to +100 °C junction temperature. All units undergo lot-level surge testing and 3σ screening on standby current (ID ≤ 2 µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous DC or peak AC voltage the device blocks without conduction; matches 12 V rail systems with safety margin. |
| V(BR) min/max | 16.7–18.5 V - Breakdown occurs within this range at 1 mA; ensures predictable turn-on above normal operating voltage. |
| VC @ IPP | 24.4 V at 123 A - Clamped voltage seen by protected load during full 3000 W 10/1000 µs surge; defines worst-case stress on downstream components. |
| PPP | 3000 W - Peak pulse power handling per 10/1000 µs waveform; enables robust protection against lightning-induced surges and inductive kickback. |
| ID @ VWM | ≤2 µA - Extremely low leakage at rated standoff voltage; avoids unnecessary power loss or false triggering in high-impedance sensing circuits. |
| Response time | <100 ps - Near-instantaneous avalanche response; mitigates ESD events before logic or analog circuitry sustains damage. |
| Operating TJ | −55 to +150 °C - Wide junction temperature range supports deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
Pinout & Package
MXLDA3KP15A uses a 3-pin SMD package (case outline per RF01243 Page 6) with void-free UL94V-0 epoxy body, tin-lead or annealed matte-tin (e3) terminations, and polarity defined by a dot marking indicating Pin 1 as cathode. Odd-numbered pins are cathodes per device polarity convention.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line side; clamps positive transients to ground when voltage exceeds V(BR). |
| Pin 2 | Anode | Common anode connection tied to system ground or reference plane; forms single-directional clamp path. |
| Pin 3 | Cathode | Second cathode terminal for dual-channel configuration; enables independent protection of two lines sharing common ground. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional construction | Enables precise clamping of positive-going transients only, avoiding interference with negative signal excursions or bipolar bus operation. |
| 3000 W peak pulse power | Withstands high-energy surges from lightning coupling or relay coil de-energization without degradation or thermal runaway. |
| MIL-PRF-19500 upscreening option | Supports high-reliability qualification including lot traceability, burn-in, and parametric screening for aerospace and military programs. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life constraints; simplifies SMT assembly and reduces handling overhead in production. |
| RoHS-compliant e3 marking | Matte-tin plating ensures lead-free solder compatibility and long-term intermetallic stability without whisker risk. |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
Use Scenario: Protection of 24 V DC input rails in variable-frequency drives exposed to inductive switching noise and ground potential differences. IC Role / Device Role / Timing Role: Primary transient shunt element placed upstream of DC-DC converters and gate drivers to limit voltage overshoot. Use Value: Limits clamped voltage to 24.4 V during 123 A surges, preventing latch-up or oxide breakdown in 30 V-rated MOSFETs and controllers. | Use Scenario: Surge protection on −48 V telecom power distribution boards subject to lightning-induced longitudinal surges per GR-1089-CORE. IC Role / Device Role / Timing Role: Unidirectional TVS connected between power rail and chassis ground to divert common-mode energy. Use Value: Delivers 3000 W dissipation at 10/1000 µs with <100 ps response, meeting Telcordia GR-1089 Class 3 requirements for central office equipment. |
| Automotive Body Control Modules | Medical Diagnostic Power Inputs |
Use Scenario: Input protection for 12 V battery-fed ECUs in engine compartments where load dump and ISO 7637-2 Pulse 5a/b transients occur. IC Role / Device Role / Timing Role: First-line clamping device on main power entry, sized to handle 123 A peak without failure. Use Value: Maintains VWM = 15 V to tolerate cold-crank dips while clamping load dump peaks to ≤24.4 V, preserving 36 V-rated regulators. | Use Scenario: Protection of isolated 24 V auxiliary power inputs in MRI and CT scanner subsystems requiring low leakage and high reliability. IC Role / Device Role / Timing Role: High-integrity transient suppressor with 2 µA max ID, enabling stable biasing of precision analog front-ends. Use Value: Combines <2 µA leakage at 15 V with MIL-PRF-19500 screening options to meet IEC 60601-1-2 ESD/EFT immunity and long-lifecycle field reliability targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | 600 W PPP rating, 24.4 V VC at 24.7 A IPP, DO-214AA package, lower surge capacity. | Targeted at consumer-grade or space-constrained designs where 3000 W is not required. | Select SMBJ15A only if system-level surge testing confirms 600 W suffices; MXLDA3KP15A required for IEC61000-4-5 Class 4 compliance. |
| SMCJ15A | 1500 W PPP rating, 24.4 V VC at 61.5 A IPP, DO-214AB package, mid-tier energy handling. | Suitable for industrial controls with moderate lightning exposure but not full Class 4 duty cycles. | SMCJ15A offers cost and footprint trade-offs; MXLDA3KP15A remains necessary for 3000 W validation and MIL upscreening needs. |
Compared with SMBJ15A and SMCJ15A, MXLDA3KP15A delivers double the surge current (123 A vs. 61.5 A/24.7 A) and full 3000 W capability required for Class 4 secondary lightning immunity - critical for aerospace, rail, and utility infrastructure deployments where single-point failure is unacceptable.
Availability
MXLDA3KP15A is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, and automotive body control modules requiring stable component supply, long-lifecycle support, and high-reliability surge protection.
Supply support for MXLDA3KP15A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The MDA3KP series was developed to deliver MIL-qualified transient suppression in surface-mount form, targeting applications where legacy through-hole TVS arrays lacked scalability, thermal performance, or process compatibility with modern SMT lines.
FAQ
What is the clamping voltage of MXLDA3KP15A at its rated peak pulse current?
The MXLDA3KP15A has a maximum clamping voltage (VC) of 24.4 V at its peak pulse current (IPP) of 123 A under 10/1000 µs waveform conditions. This value is measured per standard test methods in the RF01243 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The MXLDA3KP15A maintains this clamping performance across its full operating temperature range when derated per Figure 3.
Is MXLDA3KP15A RoHS compliant and what does the 'e3' marking indicate?
Yes, MXLDA3KP15A is RoHS compliant, indicated by the 'e3' suffix in its full marking per RF01243 Rev B. The 'e3' designation specifies annealed matte-tin plating on terminations, ensuring compatibility with lead-free reflow processes and eliminating whisker formation risk. This compliance applies to all standard production lots of MXLDA3KP15A shipped after the RoHS transition date, with full material declarations available upon request.
Can MXLDA3KP15A be used for bidirectional transient suppression?
No, MXLDA3KP15A is a unidirectional TVS device, as confirmed by its part number suffix 'A' (not 'C') and electrical specifications showing forward clamping only. For bidirectional protection, Microsemi offers the MXLDA3KP15CA variant. Using MXLDA3KP15A in bidirectional signal paths may result in unintended conduction during negative transients, so correct polarity orientation and application alignment with unidirectional DC rails are mandatory.
What is the maximum standoff voltage (VWM) and why is it important for MXLDA3KP15A selection?
The MXLDA3KP15A has a rated working standoff voltage (VWM) of 15 V, meaning it reliably blocks voltages up to this level without significant leakage current (ID ≤ 2 µA). This parameter is critical because VWM must exceed the peak operating voltage of the protected line - for example, selecting MXLDA3KP15A for a 12 V nominal system provides adequate margin against ripple, tolerance, and cold-crank dips while ensuring fast, repeatable clamping onset above 16.7 V.
Does MXLDA3KP15A support high-reliability screening per MIL-PRF-19500?
Yes, MXLDA3KP15A supports optional upscreening per MIL-PRF-19500, including wafer lot traceability, 3σ screening on standby current, and extended environmental testing. This capability is documented in Micronote 129 and enabled via factory order codes. Standard MXLDA3KP15A units are qualified to commercial reliability levels; MIL-qualified versions require explicit ordering with screening suffixes and are subject to additional test documentation and lot acceptance criteria.
MXLDA3KP15A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SMD, Gull Wing
- Series:
- MDA
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 123A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MXLDA3KP15A FAQ
1.How can I place an order for MXLDA3KP15A through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP15A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MXLDA3KP15A reliable?
The price and inventory of MXLDA3KP15A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP15A is usually 5 days.
3.What payment methods are accepted for MXLDA3KP15A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP15A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP15A?
MXLDA3KP15A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP15A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MXLDA3KP15A?
For technical support, including MXLDA3KP15A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP15A requirements.
6.How does Aetrix verify that MXLDA3KP15A is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP15A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MXLDA3KP15A meets industry standards.
7.What is the process for return or replacement of MXLDA3KP15A?
All MXLDA3KP15A units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP15A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MXLDA3KP15A part is unused and in its original packaging.
Return procedure for MXLDA3KP15A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP15A Tags
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